P0139 Becomes P0141 after new Denso Downstream sensor replacement
10

Asked by Michael Jul 26, 2016 at 03:08 AM about the 2004 Dodge Dakota SXT Quad Cab RWD

Question type: Maintenance & Repair

I was getting a recurrent code for P0139 stating that bank 1 sensor 2 had a
slow or unexpected response to ECM.  So, I replaced it with an OE Denso
sensor.  Now I have a P0141 code that states the heated oxygen heater
element has malfunctioned/failed.  This is for the exact same sensor
location, but a different code now that I have installed a new one.  What I
am trying to ask, did I get a bad O2 sensor from the store, or is there
something else going on that might be a common problem? This is on a
3.7L V6 version of the 2004 Dodge Dakota QuadCab SXT.  Thanks in
advance.

2 Answers
41,865

Auto_Centric answered 7 years ago

The DTC codes don't always mean a sensor is bad, there can be an issue in the circuit as in your case the 4 wire HEGO is signaling a no or non heat in the circuit / sensor time to inspect the connector and wiring harness the 02 can be Ok, and still have a circuit issue. The downstream sensors don't control anything, they monitor the catalytic converter temperature by means of 02 content the Upstreams are the active Major control signals of air fuel mixture in closed loop only.

1 people found this helpful.
Mark helpful
10

Michael answered 7 years ago

The problem with diagnosing the circuit is the difficulty in getting to the connector. It is above the transmission in a tight place. This sensor seems to be directly tied in to the passenger side sensor. Is it a likely scenario that a different sensor could also be causing this code? I don't want to unhook the harness if I can help it. It's a pain in the butt to get back on in such a tight place. I may have too, but I Am hoping I can get around that.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Dakota

Looking for a Used Dakota in your area?

CarGurus has 497 nationwide Dakota listings starting at $1,250.

ZIP:

Own this car?

Share your experience with others.

2004 Dodge Dakota

Write a car review

Review another car

Shortcuts

Search Dodge Dakota Questions

CarGurus Experts

  • #1
    Samantha Brown
    Reputation
    3,150
  • #2
    98DAK
    Reputation
    3,140
  • #3
    havoc_33
    Reputation
    2,120
View All

Know more, shop wisely

Search

Related Models For Sale

Used Dodge RAM 1500
86 Great Deals out of 1,605 listings starting at $995
Used Ford F-150
6,050 Great Deals out of 131,250 listings starting at $900
Used Toyota Tacoma
1,930 Great Deals out of 32,042 listings starting at $2,295
Used Chevrolet Silverado 1500
4,153 Great Deals out of 130,997 listings starting at $1,000
Used Chevrolet Colorado
924 Great Deals out of 22,775 listings starting at $900
Used Ford Ranger
598 Great Deals out of 11,779 listings starting at $1,999
Used Nissan Frontier
713 Great Deals out of 22,550 listings starting at $1,400
Used Dodge Durango
813 Great Deals out of 21,239 listings starting at $550
Used Dodge RAM 2500
69 Great Deals out of 1,080 listings starting at $3,500
Used Chevrolet S-10
3 Great Deals out of 170 listings starting at $3,899
Used GMC Canyon
332 Great Deals out of 10,446 listings starting at $3,400

Used Cars for Sale

2010 Dodge Dakota For Sale
26 listings starting at $4,995
2009 Dodge Dakota For Sale
18 listings starting at $1,500
2008 Dodge Dakota For Sale
37 listings starting at $1,250
2007 Dodge Dakota For Sale
48 listings starting at $4,450
2006 Dodge Dakota For Sale
3 Great Deals out of 74 listings starting at $2,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.